Find and print the location of a specific program or directory.
Resident programs are marked as RESIDENT if they are not
internal resident in which case they are marked as INTERNAL.
Which searches the resident list, the current directory,
the command paths and the C: assign. If the item was not
found the condition flag is set to WARN but no error is
FILE -- the command/directory to search for
NORES -- don't include resident programs in the search
RES -- consider resident programs only
ALL -- find all locations of the FILE. This may cause the
printing of the same location several times, for
instance if the current directory is C: and the
FILE was found in C: